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Founded in 1907, the Air & Waste Management Association (A&WMA) is a nonprofit, nonpartisan professional organization enhancing knowledge and expertise by providing a neutral forum for information exchange, professional development, networking opportunities, public education, and outreach to more than 5,000 environmental professionals in 65 countries. A&WMA promotes global environmental responsibility and increases the effectiveness of organizations to make critical decisions that benefit society. The Mission of A&WMA is to assist in the professional development and critical environmental decision-making of our members to benefit society.

The Applicability Determination Index (ADI) is a Web-based database that contains memoranda issued by EPA on applicability and compliance issues associated with the New Source Performance Standards (NSPS), National Emissions Standards for Hazardous Air Pollutants (with categories for both NESHAP, Part 61, and MACT, Part 63), and chlorofluorocarbons (CFC). There are also separate categories for asbestos (Part 61, Subpart M) and woodstoves (Part 60, Subpart AAA). Recently issued determinations are added to the database on a quarterly basis. The Office of Enforcement and Compliance Assurances (OECA), Compliance Assessment Media Programs Division (CAMPD) maintains the database. ADI allows users to search for determinations by a combination of categories, control numbers, subparts, regulatory citations (references), issue dates, EPA Region or office, author name, and word search strings connected with an "AND", an "OR", an "AND NOT", or an "OR NOT". Users can then view information from the determinations found including the header (which gives basic data about the determination), the determination abstract, and the full text of the determination. ADI users can select one or more determinations to download to their computers. The downloaded information will be in an ASCII text file that contains all of the selected determinations. The ASCII text file can be read or printed using a word processor or a text editor. For additional information on ADI or on a specific determination, please contact your EPA Regional Office.

NACAA exists to advance the protection of clean air and public health, and to improve the capability and effectiveness of state and local air agencies.

This website provides access to a collection of EPA resources with technical information about many areas of air pollution prevention, technology, regulation, measurement, and science.

The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. It is not an official legal edition of the CFR.

Your one-stop source for Environmental Information.

When ENN was started over twenty years ago, it was our intention that our service would bring attention to the present and future environmental issues facing the health of our planet and the people it supports. Now, in a world where these issues have migrated to the mainstream, we are looking forward and asking: what more can we do to help? ENN has a serious editorial mission. Our mission is to inform, educate, enable and create a platform for global environmental action.

Environmental directories compiled by Environment Web Directory.

The Federal Web Locator is a service provided by the Villanova Center for Information Law and Policy and is intended to be the one stop shopping point for federal government information on the World Wide Web. This list is maintained to bring the cyber citizen to the federal government's doorstep.

The Library of Congress is the largest library in the world, with millions of books, recordings, photographs, newspapers, maps and manuscripts in its collections. The Library is the main research arm of the U.S. Congress and the home of the U.S. Copyright Office. The Library preserves and provides access to a rich, diverse and enduring source of knowledge to inform, inspire and engage you in your intellectual and creative endeavors. Whether you are new to the Library of Congress or an experienced researcher, we have a world-class staff ready to assist you online and in person.

Governmental information via the Department of Commerce.

Handbook developed by the Governors Office and DEP.

Small business environmental assistance program to assist small businesses with environmental compliance and emissions reduction.

The Office of Air and Radiation (OAR) develops national programs, policies, and regulations for controlling air pollution and radiation exposure. OAR is concerned with:

• Pollution prevention and energy efficiency
• Indoor and outdoor air quality
• Industrial air pollution
• Pollution from vehicles and engines
• Radon
• Acid rain
• Stratospheric ozone depletion
• Climate change
• Radiation protection

OAR is responsible for administering the Clean Air Act, the Atomic Energy Act, the Waste Isolation Pilot Plant Land Withdrawal Act, and other applicable environmental laws.

EPA's Office of Air Quality Planning & Standards duty is to direct national efforts to meet air quality goals, particularly for smog, air toxics, carbon monoxide, lead, particulate matter (soot and dust), sulfur dioxide, and nitrogen dioxide.

EPA's Sector Facility Indexing Project (SFIP) is a pilot program that provides consolidated information about the environmental track records of many industrial facilities. SFIP integrates and consolidates environmental information that can be used by the public, as well as by government organizations and industry, to evaluate and compare the compliance records and chemical emissions of individual facilities.

Homepage for the State of West Virginia.

U. S. Legislative information.

Provides access to the latest information and tools for estimating emissions of air pollutants and performing air emission inventories.

U.S. EPA website.

Acid rain, or acid deposition, is a broad term that includes any form of precipitation with acidic components, such as sulfuric or nitric acid that fall to the ground from the atmosphere in wet or dry forms. This can include rain, snow, fog, hail or even dust that is acidic.

Serving Delaware, District of Columbia, Maryland, Pennsylvania, Virginia, West Virginia and 7 federally recognized tribes.

SBA's National Ombudsman works for small businesses to assist them with excessive federal regulatory issues. ​